Rem. |
Parameter |
Description |
Minimum |
Maximum |
Default |
Unit |
| M__ | | | Functions about compressor | | | | |
| | MU_ | | Functions about pressure switches | | | | |
| | | ML0 | suction low pressure regulation (similar to Danfoss RT1AL set point minus half of neutral zone) | 0.0 | 99.0 | 2.8 | (gauge) bar |
| | | MLb | suction pressure regulation dead band (ML0 +/- MLb are the upper/lower limits) | 0.0 | 99.0 | 0.5 | bar |
| | | MLd | suction pressure regulation differential (loading at ML0+MLb+MLd / unl at ML0-MLb-MLd) | 0.0 | 99.0 | 0.2 | bar |
| | | MH0 | discharge (HP) pressure limit forcing the timed compressor unload | 0.0 | 99.0 | 24.0 | (gauge) bar |
1 | | | MLH | low pressure safety restart ( similar to Danfoss KP15 lp set point ) | 0.0 | 99.0 | 1.2 | (gauge) bar |
| | | MLL | low pressure safety stop ( similar to Danfoss KP15 lp set point - differential ) | 0.0 | 99.0 | 0.2 | (gauge) bar |
| | | MHH | high pressure safety stop ( similar to Danfoss KP15 hp set point ) | 0.0 | 99.0 | 28.0 | (gauge) bar |
| | | MHL | high pressure safety restart ( similar to Danfoss KP15 hp set point - differential ) | 0.0 | 99.0 | 24.0 | (gauge) bar |
2 | | | MU1 | minimum oil differential pressure of compressor nr. 1 | 0.0 | 99.0 | 1.0 | bar |
| | | MU2 | minimum oil differential pressure of compressor nr. 2 | 0.0 | 99.0 | 1.0 | bar |
3 | | | MU3 | minimum oil differential pressure of compressor nr. 3 | 0.0 | 99.0 | 1.0 | bar |
| | | Mut | minimum oil receiver temperature before opening the oil solenoid | -55.0 | 145.0 | 25.0 | °C |
4 | | | MM1 | usage of mc nr. 1 output: 0=off / 1=on / 2=auto / 3=slave no / 4=slave nc / 5=kriwan | 0 | 5 | 2 | / |
| | | MM2 | usage of mc nr. 2 output: 0=off / 1=on / 2=auto / 3=slave no / 4=slave nc / 5=kriwan | 0 | 5 | 2 | / |
| | | MM3 | usage of mc nr. 3 output: 0=off / 1=on / 2=auto / 3=slave no / 4=slave nc / 5=kriwan | 0 | 5 | 2 | / |
5 | | | MMH | enable external load override on INP-4 | oFF | _on | oFF | / |
6 | | | MMd | external load override delay | 0 | 194 4:20:15 | 1:00:00 | dd hh:mm:ss |
| n__ | | | Functions about fans | | | | |
| | nc_ | | Functions about condenser fans | | | | |
| | | ncH | enable condenser fans when compressor is off and discharge pressure is over maximum | oFF | _on | _on | / |
7 | | | ncr | enable condenser fans speed regulation | oFF | _on | _on | / |
8 | | | ncU | fan minimum speed | 0 | 255 | 40 | / |
| | | ncd | minimum HP-LP-difference to keep on fans | 0.0 | 99.0 | 2.0 | (gauge) bar |
| | | n1H | fan 1 start pressure ( similar to Danfoss KP5 set point ) - active just when ncr is oFF | 0.0 | 99.0 | 10.0 | (gauge) bar |
9 | | | n1L | fan 1 stop pressure ( similar to Danfoss KP5 set point - differential ) | 0.0 | 99.0 | 6.0 | (gauge) bar |
| | | n2H | fan 2 start pressure | 0.0 | 99.0 | 7.0 | (gauge) bar |
| | | n2L | fan 2 stop pressure | 0.0 | 99.0 | 5.0 | (gauge) bar |
| | | n3H | fan 3 start pressure | 0.0 | 99.0 | 8.0 | (gauge) bar |
| | | n3L | fan 3 stop pressure | 0.0 | 99.0 | 6.0 | (gauge) bar |
| | | n4H | fan 4 start pressure | 0.0 | 99.0 | 9.0 | (gauge) bar |
| | | n4L | fan 4 stop pressure | 0.0 | 99.0 | 7.0 | (gauge) bar |
| b__ | | | Functions about probe calibration | | | | |
| | b1_ | | Probe nr. 1 | | | | |
| | | b1C | oil receiver temperature | -99.0 | 99.0 | 0.0 | K |
| | | b1A | enable probe | oFF | _on | _on | / |
| | b2_ | | Probe nr. 2 | | | | |
| | | b2C | discharge temperature | -99.0 | 99.0 | 0.0 | K |
| | | b2A | enable probe | oFF | _on | _on | / |
| | b3_ | | Probe nr. 3 | | | | |
| | | b3C | engine room temperature | -99.0 | 99.0 | 0.0 | K |
| | | b3A | enable probe | oFF | _on | _on | / |
| | b4_ | | Probe nr. 4 | | | | |
| | | b4C | mc1 oil pressure | -99.0 | 99.0 | 0.0 | bar |
| | | b4A | enable probe | oFF | _on | _on | / |
| | b5_ | | Probe nr. 5 | | | | |
| | | b5C | mc2 oil pressure | -99.0 | 99.0 | 0.0 | bar |
| | | b5A | enable probe | oFF | _on | _on | / |
| | b6_ | | Probe nr. 6 | | | | |
| | | b6C | mc3 oil pressure | -99.0 | 99.0 | 0.0 | bar |
| | | b6A | enable probe | oFF | _on | _on | / |
| | b7_ | | Probe nr. 7 | | | | |
| | | b7C | high pressure (HP) | -99.0 | 99.0 | 0.0 | bar |
| | | b7A | enable probe | oFF | _on | _on | / |
| | b8_ | | Probe nr. 8 | | | | |
| | | b8C | low pressure (LP) | -99.0 | 99.0 | 0.0 | bar |
| | | b8A | enable probe | oFF | _on | _on | / |
| L__ | | | Functions about alarm and stand-by | | | | |
| | LI_ | | Other alarm inputs | | | | |
| | | L1H | enable mc1 alarm | oFF | _on | _on | / |
| | | L1d | mc1 alarm delay | 0 | 194 4:20:15 | 30:00 | dd hh:mm:ss |
| | | L2H | enable mc2 alarm | oFF | _on | _on | / |
| | | L2d | mc2 alarm delay | 0 | 194 4:20:15 | 30:00 | dd hh:mm:ss |
| | | L3H | enable mc3 alarm | oFF | _on | _on | / |
| | | L3d | mc3 alarm delay | 0 | 194 4:20:15 | 30:00 | dd hh:mm:ss |
| | | L4H | enable external override alarm | oFF | _on | _on | / |
| | | L4d | override alarm delay | 0 | 194 4:20:15 | 1:00:00 | dd hh:mm:ss |
| | | L5H | enable digital input 5 alarm (compressor phase monitor / thermal overload relay) | oFF | _on | _on | / |
| | | L5d | digital input 5 alarm delay | 0 | 194 4:20:15 | 1 | dd hh:mm:ss |
| | Lo_ | | On / stand-by status | | | | |
10 | | | Loo | actual status: stand-by or on | oFF | _on | oFF | / |
| d__ | | | Functions about delays | | | | |
| | dF_ | | Delay from previous stop | | | | |
| | | dF4 | mc1 start delay | 0 | 194 4:20:15 | 5:00 | dd hh:mm:ss |
| | | dF5 | mc2 start delay | 0 | 194 4:20:15 | 10:00 | dd hh:mm:ss |
| | | dF6 | mc3 start delay | 0 | 194 4:20:15 | 15:00 | dd hh:mm:ss |
| | | dS4 | mc1 stop delay | 0 | 194 4:20:15 | 45 | dd hh:mm:ss |
| | | dS5 | mc2 stop delay | 0 | 194 4:20:15 | 30 | dd hh:mm:ss |
| | | dS6 | mc3 stop delay | 0 | 194 4:20:15 | 15 | dd hh:mm:ss |
| P__ | | | Functions about master preferences | | | | |
| | Pd_ | | Functions about network address | | | | |
| | | PdM | master address for global network communication | 0 | 254 | 1 | / |
| | | PdS | number of slaves connected to this master | 1 | 2 | 2 | / |
| | Pb_ | | Suction pressure broadcast | | | | |
| | | PbH | enable suction pressure periodic broadcast over the PC net | oFF | _on | _on | / |
| | | Pbd | delay between pressure broadcast messages | 0 | 194 4:20:15 | 30 | dd hh:mm:ss |
| | | Pbb | delay between latest received message and broadcasting start | 0 | 194 4:20:15 | 2:00 | dd hh:mm:ss |
| | | PbO | specify originating address in the pressure message | oFF | _on | _on | / |
| | | PPM | become network master after Pbb delay | oFF | _on | oFF | / |
| | | P2H | poll periodically second central unit for pressure broadcast | oFF | _on | oFF | / |
| | | P2M | master address of second central unit | 0 | 254 | 2 | / |
| | | P2d | delay between pressure broadcast messages of second central unit | 0 | 194 4:20:15 | 30 | dd hh:mm:ss |
| | | P3H | poll periodically third central unit for pressure broadcast | oFF | _on | oFF | / |
| | | P3M | master address of third central unit | 0 | 254 | 3 | / |
| | | P3d | delay between pressure broadcast messages of third central unit | 0 | 194 4:20:15 | 30 | dd hh:mm:ss |
| | PO_ | | Output assignment | | | | |
11 | | | PO3 | assign out-3 relay to: 0=condenser fan / 1=oil receiver solenoid / 2=alarm / 3=oil heater / 4=subcooler / 5=off / 6=NC oil sol / 7=oil sol plus subcooler on FAN / 8=NC oil sol plus subcooler on FAN / 9=fourth mc / 10=fourth mc plus subcooler on FAN | 0 | 255 | 0 | / |
| I__ | | | Functions about input-output and machine state (read only) | | | | |
| | IA_ | | Analog inputs | | | | |
| | | IA1 | oil receiver temperature | -55.0 | 145.0 | -55.0 | °C |
| | | IA2 | discharge temperature | -55.0 | 145.0 | -55.0 | °C |
| | | IA3 | engine room temperature | -55.0 | 145.0 | -55.0 | °C |
| | | IA4 | oil pressure of mc1 | 0.0 | 30.0 | 0.0 | (gauge) bar |
| | | IA5 | oil pressure of mc2 | 0.0 | 30.0 | 0.0 | (gauge) bar |
| | | IA6 | oil pressure of mc3 | 0.0 | 30.0 | 0.0 | (gauge) bar |
| | | IA7 | high pressure (HP) | 0.0 | 30.0 | 0.0 | (gauge) bar |
| | | IA8 | low pressure (LP) | 0.0 | 30.0 | 0.0 | (gauge) bar |
| | Id_ | | Digital input | | | | |
| | | Id1 | mc1 hardware safety | oFF | _on | oFF | / |
| | | Id2 | mc2 hardware safety | oFF | _on | oFF | / |
| | | Id3 | mc3 hardware safety | oFF | _on | oFF | / |
| | | Id4 | external override | oFF | _on | oFF | / |
| | | Id5 | phase software safety | oFF | _on | oFF | / |
| | OA_ | | Analog output | | | | |
| | | LLA | actual alarm - read only (0 means no alarm) | 0 | 255 | 0 | / |
| | | OA1 | condenser | 0 | 255 | 0 | / |
| | | OA2 | humidity - 4...20 mA | 0 | 255 | 0 | / |
| | Od_ | | Digital output | | | | |
12 | | | Od1 | condenser fan 2 | oFF | _on | oFF | / |
| | | Od2 | condenser fan 3 | oFF | _on | oFF | / |
| | | Od3 | condenser fan 4 | oFF | _on | oFF | / |
| | | Od4 | compressor 1 | oFF | _on | oFF | / |
| | | Od5 | compressor 2 | oFF | _on | oFF | / |
| | | Od6 | compressor 3 | oFF | _on | oFF | / |
| | | Od7 | oil receiver solenoid - eventually connected to OUT-3 | oFF | _on | oFF | / |
| | | Od8 | alarm - eventually connected to OUT-3 | oFF | _on | oFF | / |
| E__ | | | Functions about slave preferences | | | | |
| | EY_ | | Functions about display | | | | |
| | | EYY | input to show on display: 1=IA1 / 2=IA2 ... | 0 | 255 | 1 | / |
Nr. |
Remark |
1 | When MLH<MLL,there is a delay of 10*(MLL-MLH) seconds on lp switch. Eventual pumpdown restart is over MLH+1 bar. |
2 | Fixed time 120 s and manual reset. |
3 | In H425V3, starting from revision 03, when MU1 and MU3 are 5.0 and b4A and b6A are oFF, use 5NTC controller for compressors without oil pump; connect HP probe on AN-6 and LP on AN-7. |
4 | Caution! Selection by manual override forces compressor to run whatever the high and low pressure; no safety is left except hardware ones. In slave mode the output is used for partialization. In kriwan mode output is off for reset during stand-by. |
5 | Caution! The external override drives the compressors ignoring high and low pressure; no safety is left except hardware ones. It is recommended to close this contact passing through both contacts of a low pressure and high pressure switch like a kp15. The closed contact is interpreted as "load" while the open contact is neutral. The delays dF4 through dF6 are respected. |
6 | After the delay elapsed, the override forces a load. Automatic reset. |
7 | When speed regulation is off the fan is operated on-off. |
8 | Caution! Speed regulation can cause fan fault or electronic board fault. Low and average minimum speed can increase the risk. |
9 | During the first 10 seconds of speed regulation, the n1L is replaced by (n1H+n1L)/2. |
10 | Passing from stand-by to on and at power on, there is a 5 second delay spent in a virtual stand-by. |
11 | In H425V3, starting from revision 02, when PO3 is 4, OUT-3 drives the subcooler liquid solenoid; AN-1 input is the subcooler suction temperature; Mut is the wanted overheating, where 8.0 °C means 8.0 °C; maximum overheating is fixed at 99.0 °C; minimum overheating is fixed at 6.0 °C; n4H is the refrigerant type, where 0.1 bar means R404A; n4L is the cycle period, where 0.8 bar means 8 s; H4H is the initial on-time, where 0.5 bar means 5 s; H4L is the adaptation speed, where 0.8 bar means 8. To turn off the subcooler solenoid, set PO3 to 5. The subcooler is enabled just when all of the available motorcompressors are on. From revision 05, when PO3 is 4, the value of A4H*10, said k, determines when subcooler is on: for k<10 is on when OM2<=OM1+k, all mc are on, except at most k; for 10<=k<20 is on when k-10<=OM1, at least k-10 mc are on; for 20<=k is same of k equal to 0, all mc have to be on. Rest as in revision 02. When PO3 is 6, do as when PO3 is 1, but inverted contact (NC). When PO3 is 7, do as when PO3 is 1, plus subcooler on FAN, with oil temperature on AN-1, suction temperature on AN-3, and A4L as wanted overheating, where 8.0 bar means 8.0 °C; all the rest as above. When PO3 is 8, do as when PO3 is 6, plus subcooler on FAN; all the rest as above. |
12 | The minus sign on display ("-") signals that output is going to start after a delay. |
Display |
Alarm |
A01 | mc 1 alarm | Pressure switch, thermistors, or any other compressor safety device has disconnected. |
A02 | mc 2 alarm | Pressure switch, thermistors, or any other compressor safety device has disconnected. |
A03 | mc 3 alarm | Pressure switch, thermistors, or any other compressor safety device has disconnected. |
A04 | external override | The external override contact is driving the controller. |
A05 | mc phase | Compressor overload/thermal relay disconnected, or missing mains phase - manual reset. |
A06 | mc 1 oil pressure | Oil differential pressure remained under minimum value for 120 seconds - manual reset. |
A07 | mc 2 oil pressure | Oil differential pressure remained under minimum value for 120 seconds - manual reset. |
A08 | mc 3 oil pressure | Oil differential pressure remained under minimum value for 120 seconds - manual reset. |